New project: camera color profile calculation

ArtDen

Stan
Try 0.2.3beta2: DNG4PS-2 . It contain support for TX1. Color matrix is not very good, but I think it is usable for the first time.

ArtDen

0.2.3-beta3 contains better color matrix for S5

lukg

ArtDen
0.2.3-beta3 contains better color matrix for S5

I see, but it's a little reddish for me!
Is there a way to tell dng4ps2 using a copied profile (my custom S5 profile) instead of automatically choose the default S5 profile? I use conversion with jpg to keep exif

ArtDen

lukg, you don't have to copy profile. Just change color matrix for existing S5 profile.

lukg

ArtDen
lukg, you don't have to copy profile. Just change color matrix for existing S5 profile.

Ok, thanks! I will overwrite that!

noname

May be this is too early to request, but if any A720IS owner calculates calibration parameters in ACR for daylight,
it will be of great help. This has to be done by photographing color charts in daylight, not by comparing the raw with the jpeg,
as the jpeg has few inaccurate colors. Same request for other cams too!

bether

Hello,
Here is RAW and JPG pallete of SX100 IS
zSHARE - raw_pallete_sx100is.zip
Thanks

ArtDen

bether Try 0.2.3beta6: DNG4PS-2
There is support of SX100 IS included there

bether

ArtDen, Thank You for beta6, but I shot another RAW palette from new monitor😀 Look better.
zSHARE - pallete_sx100_is.zip

ArtDen

bether, monitor doesn't matter for color profile calculation 😀

bether

ArtDen
bether, monitor doesn't matter for color profile calculation 😀

Thanks understood.
I increase Jpeg size to sensor size value and pics have bigger FOV😀

ArtDen

bether, it is not good idea. Increasing active area, you get thin black borders around the image (these borders are blind areas of camera sensors). Increasing Jpeg size (or crop size) you get interpolation artifacts during developing DNG file. Properly crop size serves to avoid interpolation artifacts

bether

You are right.

xbc

I have a CRW, and a RAW and the results I got from an PowerShot SD600. Even though the chdk is beta for my camera it is pretty much 100% working. I hope this file helps to add support for this camera. If anything else is needed I would be happy to help out.

SD600-Raw-JPG.rar

The results I got were using program 0.2.2. I tried to use the newest beta 0.2.3 b6 , but the New button to add a new camera doesn't seem to work becuase it is disabled, and besides I dont know what to put in the fields for sensor type, active zone, black and white levels and the mosaic type.

ArtDen

xbc you have to use button "Copy" for it. First choose other camera, which sensor geometry equals yours, and press "copy". Then rename new camera name into PowerShot SD600.

ArtDen

xbc, I downloaded your files. Your forget to set focus to infinity and to select minimal ISO value

xbc

The iso value is set to 80 which is the lowest in my camera. Then again I have been playin with all the CHDK values, will try to reset all values to see if that helps. On the focus to infinity is that the zoom factor? I put that in the middle point, if not I am not sure what is that. I am willing to try again, please advise, and thanks for all your help.

I guess I found the infinity focus, it is the mountain icon on my camera. Let me try again and I will post my files

ArtDen

xbc ISO was "Auto" when you did your photo (I see it from Jpeg exif data) and your camera used ~350 for ISO when i did your shot (I see it from maker notes of Jpeg)
About focus: just select manual socus and set it to infinity

xbc

I had the wrong iso setting, becuase I had moved the setting in the chdk. It should be Iso 80 Now. I also turned on the Infinity setting, and made sure it said inf in the DOF while shooting. Here are the new files for an SD600. (Which is the same model of a IXUS 60 or an IXY 70)

sd600-crw-jpg.rar

Hope this is a correct picture, thanks

Acoording to wikipedia it should have the same sensor as a SD700 IS

xbc

After playing a while with the new beta, I figured how to add my camera. This were my results

RESULTS
White area: 11
Errors:
Zone 1: 8.0%
Zone 2: 8.8%
Zone 3: 3.1%
Zone 4: 8.6%
Zone 5: 5.7%
Zone 6: 2.2%
Zone 7: 9.4%
Zone 8: 6.1%
Zone 9: 4.9%
Zone 10: 9.7%
Zone 11: 3.0%
Zone 12: 9.2%
Zone 13: 2.8%
Zone 14: 7.6%
Zone 15: 8.1%
Zone 16: 9.8%
Zone 17: 5.4%
Zone 18: 8.8%
Zone 19: 8.7%
Zone 20: 9.9%
Zone 21: 9.5%
Zone 22: 9.4%

Camera -> XYZ matrix:
1.385357 0.430941 0.797555
0.437873 1.671073 0.007964
-0.051003 -0.479127 4.310050

XYZ -> Camera matrix:
0.794479 -0.246904 -0.146559
-0.208113 0.662777 0.037286
-0.013733 0.070756 0.234426

I don't know if this is a good result or a bad one, but if it is a bad one I would like to know what I can do to make it better.

BTW My monitor is calibrated using a Syper 2 Pro to a 6500k 2.2 Gamma setting, and I have both a Colorimeter (a spyder2 pro)and a Spectocolorimeter (a printfix pro) To do all sorts of calibrating tests. I know that the sypder has the capacity to read colors off the screen.

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